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And in case you start to yearn for ocean creatures, simply repair downstairs and move to a second pool to get a shark’s-eye view of a giant aquarium.

Yet to be built, since it is still in concept form, it rivals the most expensive apartment in New York City, a massive unit at 220 Central Park South, in potential cost. Though Teruzzi said he couldn’t estimate the construction bill, it would cost about $250 million to bring the rendering to reality, according to Alberto Mancini, owner of AM Yacht Design, where Teruzzi works. For his part, Teruzzi tackled this design as a personal project.